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Questions and Answers
What is a transducer?
A device that converts a signal from one physical form to another.
Which of the following is an example of a transducer?
What is the output of a sensor?
A signal that is converted to human readable form.
Which of the following is NOT a physical parameter or stimulus that a sensor can detect?
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What are the two main types of sensor characteristics?
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What does accuracy in sensor characteristics represent?
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What is the range of a sensor?
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Study Notes
Transducers
- Converts signals from one physical form to another
- Examples:
- Microphone: Sound to electrical signals
- Speakers: Electrical signals to sound
- Antenna: Electromagnetic energy to electricity and vice versa
- Strain gauge: Strain to electrical signals
Sensors
- Detect the presence of a particular physical quantity
- Output signal is converted to human-readable form
- Sense physical changes in a system
- Input:
- Physical parameters
- Stimuli
- Examples: Temperature, light, gas, pressure, and sound
- Output:
- Response to stimuli
Sensor Examples
- Temperature and humidity sensors
- Gas detectors
- Ultrasonic sensors
- CMOS cameras
- PIR sensors
- Rain detectors
- Fire detectors
Sensor Characteristics
-
Static characteristics:
- How the output of the sensor changes in response to an input change after steady-state conditions are met
- Accuracy: Correctness of the output compared to a superior system; difference between the standard and measured value
- Range: Highest and lowest values of the physical quantity within which the sensor can sense; beyond this value there is no sensing or response
-
Dynamic characteristics:
- Properties of the system’s transient response to an input
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Description
Explore the concepts of transducers and sensors in this quiz. Learn how different devices convert signals and detect physical quantities, including their characteristics and examples. Test your understanding of their functions and applications.
